This has actually been around for a while, but I just released version 2.2 and it occurred to me that I didn't have a topic specifically for it. So here it is! UniFileBrowser is a runtime file-browser. It's not a plugin, allows for lot of customization, and works on most platforms. Source code is included; it works with Unityscript and C# (and probably Boo though I haven't tested that). Available on my site and the...
UniFileBrowser - runtime file browsing
UniFileBrowser - runtime file browsing